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WO2005066379A1 - Elimination de dechets solides accumules pendant le traitement de minerai de titane - Google Patents

Elimination de dechets solides accumules pendant le traitement de minerai de titane Download PDF

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Publication number
WO2005066379A1
WO2005066379A1 PCT/US2004/038074 US2004038074W WO2005066379A1 WO 2005066379 A1 WO2005066379 A1 WO 2005066379A1 US 2004038074 W US2004038074 W US 2004038074W WO 2005066379 A1 WO2005066379 A1 WO 2005066379A1
Authority
WO
WIPO (PCT)
Prior art keywords
solids
titanium
waste
waste solids
neutralized
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2004/038074
Other languages
English (en)
Inventor
Samuel R. Alexander
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tronox LLC
Original Assignee
Tronox LLC
Kerr McGee Chemical LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tronox LLC, Kerr McGee Chemical LLC filed Critical Tronox LLC
Publication of WO2005066379A1 publication Critical patent/WO2005066379A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/005—Waste disposal systems
    • E21B41/0057—Disposal of a fluid by injection into a subterranean formation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B1/00—Dumping solid waste
    • B09B1/008—Subterranean disposal, e.g. in boreholes or subsurface fractures
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00—Obtaining refractory metals
    • C22B34/10—Obtaining titanium, zirconium or hafnium
    • C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
    • C22B34/1236—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by wet processes, e.g. by leaching
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/006—Wet processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the present invention relates to methods for protecting surface and subterreanean waters against accumulated waste solids from the industrial processing of titanium-bearing ores, for example, in the manufacture of titanium dioxide or titanium metal. More particularly, the present invention relates to methods for protecting such waters, especially subterranean drinking water sources, against the movement (or migration) of hazardous metal solid wastes produced in the industrial processing of titanium-bearing ores to such waters from a pond into which sludges containing these solids have been deposited over time.
  • waste metal chlorides from a chloride route titanium dioxide process has been accomplished by one or more of four techniques: 1) neutralization and storage of the resulting neutralized sludge in a pond; 2) neutralization, followed by filtration and then landfilling of the filter cake; 3) open ocean disposal of the non-neutralized waste metal chloride solutions; or 4) injection of the non-neutralized waste metal chloride solutions into porous subsurface formations (safely isolated from subterranean drinking water sources) via deep well injection.
  • groundwater' subterranean drinking water sources
  • the present invention concerns a process for treating neutralized waste solids from the processing of titanium-bearing ores, whereby the neutralized waste solids are contacted with an acid under conditions effective to dissolve at least some of the waste solids and then residual undissolved solids are separated out, prior to injecting the remainder into a subterranean waste disposal well.
  • the process is applied to neutralized waste solids which have accumulated in a waste disposal pond, whereby the neutralized waste solids are removed from the pond, contacted with an acid under conditions effective to dissolve at least some of the waste solids recovered from the pond, undissolved solids are separated out and the remainder is injected into a subterranean waste disposal well.
  • the well 10 receives liquid wastes including the dissolved waste solids produced by the process of the present invention by means of the injection pump 12.
  • Wastes in formation 18 are safely isolated from drinking water sources 20 by preferably several intervening layers or confining zones 22 which are substantially impermeable to any upward migration of liquid wastes from within the formation 18, so that there is no reasonable possibility of contamination of any of the drinking water sources 20 by means of such upward migration.
  • the injection tubing 14 is set on a packer 24 to prevent backflow of the wastes in the annulus 26 between the injection tubing 14 and long string casing 28, and the packer 24 is isolated and monitored for leaks, for example by means of an annulus pressure gauge 30.
  • the drinking water sources 20 are protected from the wastes in injection tubing 14 and from any wastes that might leak into the annulus 26 over time by means of the surface casing 32 and by cementing on the outside of both the surface casing 32 and long string casing 28.
  • the process of the present invention involves the removal, dissolution and injection into the well 10 of accumulated neutralized waste solids from the processing of titanium-bearing ores, in particular those solids which have been accumulated in ponds in the vicinity of surface and subterranean waters.
  • the dissolution is accomplished by contacting the waste solids with an acid under conditions effective to dissolve at least some of the waste solids recovered from the pond, and then undissolved solids are preferably separated out prior to injection of the remainder into the well 10.
  • a preferred embodiment of the process will involve dredging accumulated waste metal hydroxides resulting from the manufacture of titanium dioxide by the chloride route and the neutralization of the waste metal chlorides produced therein, from a waste disposal pond wherein such materials have been deposited.
  • the waste solids recovered in this manner are then contacted with byproduct hydrochloric acid from the same chloride route titanium dioxide manufacturing process, typically having a concentration of about 25 percent of HC1, for a time and at a temperature sufficient preferably to dissolve all or substantially all of the waste metal solids that would be considered as hazardous wastes.
  • Residual undissolved solids preferably comprising only unreacted ore and coke which had been carried through the titanium dioxide manufacturing process and which can be recycled to such process, together with other materials which may be recovered and sold or put to some beneficial use, are preferably separated from the dissolved materials in solution by filtration or other known, conventional means.
  • the now- dissolved waste solids are then injected into the well 10 as described above, whether directly or following the combination of the liquid bearing such dissolved wastes with another liquid suited for injection into the well 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Treatment Of Sludge (AREA)
  • Processing Of Solid Wastes (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

L'invention porte sur un procédé de traitement de déchets solides neutralisés accumulés pendant le traitement de minerai de titane consistant: à les mettre en contact avec un acide dans des conditions en assurant au moins la dissolution partielle; à en séparer les solides résiduels non dissous; et à injecter les solides résiduels non dissous dans un puits souterrain d'injection. Le procédé est particulièrement adapté à l'élimination des déchets solides de métaux dangereux ayant séjourné dans des bassins ad hoc, mais présentant un risque de migration vers les eaux de surface et souterraines.
PCT/US2004/038074 2003-12-29 2004-11-16 Elimination de dechets solides accumules pendant le traitement de minerai de titane Ceased WO2005066379A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/746,644 US20050147472A1 (en) 2003-12-29 2003-12-29 Disposal of accumulated waste solids from processing of titanium-bearing ores
US10/746,644 2003-12-29

Publications (1)

Publication Number Publication Date
WO2005066379A1 true WO2005066379A1 (fr) 2005-07-21

Family

ID=34710717

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/038074 Ceased WO2005066379A1 (fr) 2003-12-29 2004-11-16 Elimination de dechets solides accumules pendant le traitement de minerai de titane

Country Status (3)

Country Link
US (1) US20050147472A1 (fr)
TW (1) TW200535251A (fr)
WO (1) WO2005066379A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7943103B2 (en) * 2006-04-27 2011-05-17 Tronox Llc Waste solids handling
US8366349B2 (en) * 2006-11-13 2013-02-05 Beachner Construction Company, Inc. System and method for aggregate disposal

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3655344A (en) * 1969-09-02 1972-04-11 Ppg Industries Inc Treatment of titanium tetrachloride drier residue
US4655839A (en) * 1983-09-06 1987-04-07 E. I. Du Pont De Nemours And Company Landfillable composition from iron chloride waste treatment in molten salt
EP0390293A1 (fr) * 1989-03-30 1990-10-03 Kemira Pigments B.V. Procédé de traitement de déchets métalliques de type chlorure
EP0595492A1 (fr) * 1992-10-30 1994-05-04 Tioxide Group Services Limited Traitement de déchet contenant des chlorides de métaux
US5334362A (en) * 1991-09-23 1994-08-02 Kronos, Inc. Process for the production of disposable products from metal chlorides in a titanium dioxide chloride process

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4811478B1 (fr) * 1970-12-24 1973-04-13
US3867515A (en) * 1971-04-01 1975-02-18 Ppg Industries Inc Treatment of titanium tetrachloride dryer residue
US3817859A (en) * 1972-03-29 1974-06-18 Texaco Inc Waste water treatment method
US4579721A (en) * 1984-08-03 1986-04-01 Getty Oil Company Process for recovering metals from waste
US5146699A (en) * 1991-12-05 1992-09-15 Ellicott Machine Corporation Auger dredge specially adapted to removal of toxic sediment
US5613242A (en) * 1994-12-06 1997-03-18 Oddo; John E. Method and system for disposing of radioactive solid waste
US6800260B2 (en) * 2002-02-11 2004-10-05 Millennium Inorganic Chemicals, Inc. Processes for treating iron-containing waste streams

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3655344A (en) * 1969-09-02 1972-04-11 Ppg Industries Inc Treatment of titanium tetrachloride drier residue
US4655839A (en) * 1983-09-06 1987-04-07 E. I. Du Pont De Nemours And Company Landfillable composition from iron chloride waste treatment in molten salt
EP0390293A1 (fr) * 1989-03-30 1990-10-03 Kemira Pigments B.V. Procédé de traitement de déchets métalliques de type chlorure
US5334362A (en) * 1991-09-23 1994-08-02 Kronos, Inc. Process for the production of disposable products from metal chlorides in a titanium dioxide chloride process
EP0595492A1 (fr) * 1992-10-30 1994-05-04 Tioxide Group Services Limited Traitement de déchet contenant des chlorides de métaux

Also Published As

Publication number Publication date
US20050147472A1 (en) 2005-07-07
TW200535251A (en) 2005-11-01

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